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Finding the Fourth Proportional to 404,557.45, 606,847.11 and 105,031.40

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Solution

The fourth proportional to 404,557.45, 606,847.11 and 105,031.40 is: 157,549.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,557.45 : 606,847.11 = 105,031.40 : x
  2. Step 2: Convert to fraction form
    404,557.45/606,847.11 = 105,031.40/x
  3. Step 3: Cross multiply
    404,557.45x = 606,847.11 × 105,031.40
  4. Step 4: Simplify right side
    404,557.45x = 63,737,998,121.15
  5. Step 5: Solve for x
    x = 63,737,998,121.15/404,557.45
  6. Step 6: Final answer
    x = 157,549.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.